Samsung EVN4-9 (HS40) Intra Cavity transducer has a frequency range of 4.0 MHz. – 9.0 MHz. and supports the following applications: Obstetrics, Gynaecology, Urology. The Samsung EVN4-9 (HS40) transducer is compatible with: Samsung HM70A with Plus, Samsung HS40, Samsung HS30 ultrasound systems.